推 GPR70:推翻譯～ 05/05 03:35
※ 引述《logicmana (就是要看棒球)》之銘言：
: 新版的 Gameday 都會有投手每一個球的數據
: 包含 SPD BRK PFX
: 其中 BRK 是指球於本壘板上空的變化幅度嗎?
: 那另外一個PFX 又是指什麼?
: Swinging Strike 的球大多都是這兩個數字很大
: 請解惑...謝謝...
http://gameday.mlblogs.com/
Q: What is the PFX value?
Q: PFX值是什麼？
A: The "Pitch-f/x" value is currently defined as the measurement of the
distance between the location of the actual pitch thrown over the plate, and
the calculated location of a ball thrown by the pitcher in the same way, with
現在使用的pitch-f/x值定義為實際進壘位置和計算上球無旋轉時進壘位置的距離。
no spin; this is the value we provided in Enhanced Gameday last season as
"Break". The new Break value, which we feel is more appropriate for the
common understanding of the term, is defined as the measurement of the
greatest distance between the trajectory of the pitch at any point between
the release point and the front of home plate, and the straight line path
from the release point and the front of home plate. By this definition, a
Barry Zito curveball will have a much greater Break value than a Brad Penny
fastball.
以前我們把這叫做break，現在為了符合本詞一般使用習慣，break改為表示理論軌跡和
實際軌跡間任一點的最大距離。
在這定義下，Zito的曲球會有比Penny速球大很多的break值。
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※ 編輯: Romulus 來自: 218.169.76.240 (05/04 11:06)